Effect of Cobalt Addition on Shape Memory Properties of Ferromagnetic Ni-Mn-Ga Sputtered Films

Yoshiharu Katano, Makoto Ohtsuka, Minoru Matsumoto, Kunihiro Koike, Kimio Itagaki

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Effect of adding cobalt on the shape memory properties of Ni-Mn-Ga sputtered films was investigated. It was found that the films containing cobalt less than 5.1 mol% has a single phase and those with more than 6.8 mol%Co has two phases. The Curie temperature increased and the saturation magnetization decreased with increasing cobalt content. These films exhibited one way shape memory effect. The shape recovery start temperature increased and the temperature range of shape change broadened with increasing cobalt content.

Original languageEnglish
Pages (from-to)350-352
Number of pages3
JournalMaterials Transactions
Volume45
Issue number2
DOIs
Publication statusPublished - 2004 Feb

Keywords

  • Ferromagnetic shape memory alloy
  • Heusler type crystal structure
  • Nickel-manganese-gallium
  • Shape memory effect
  • Sputtered film

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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